Furnace-front.



W. A. WHITE-- FURNACE FRONT.

APPLICATION tum) NOV 4, 19.12.

Patented Dec. 30, I913.

,To' all whom. it may concern UNITED snares.

PATENT-OFFICE. 7

ALBERT iv'vfir'rn-or NEW YORK, n. Y. I

summon-mom.

Be it known that I, Wrpmamf Amm'r WHITE, acitizen of thefUnited States, and residentof the borough of Manhattan, 1n the city, county, and State of New Ybrk,'have; invented certain mew and useful =Improve-i 'ments in Furnace-Fronts, of which the fol-E lowing is a speeification. V I p i "The invention-relates to 'fimia'ce's wherein; liquid hydrocarbon is-Bmplo'yedas fuel, and; my improvcmentha 's particular reference thefurnacefront, atewhieli the oilaizd a r; are admitted, the leadir'igieh'aractcristic dis-E tin'guishing my-said improvem nt residing! in certain means whereby thefatornized oil introduced into theffurnace by the burner, receives an admixture of I air in manner to; promoteeomplete combustion in allparts of. thefurnace. I

.Hitherto, in oil-furnacesjof the type in question practicehaaishown that-atthe dior: I

ward-end ofthe furiiiacejfrom which the fuel is admitted, as ia' 1y in;: thejlarger radii thereof 'or parts distant from 3 the burner, combustion is less thorough than in'the more rearward portions of the furnace interior, and it"isthepurpom of my improvement to cause a portioniofl the' entering fuel, having commingled and burning therewith. an arm ple air supply, tobe directed forwardly and radially, and thus to set up and maintain in the forward-portion of the furnace "a ten}.

perature'equal to that'obtainin'g in the more rearward furnace portions,- thereby, estab-- lishing. a' higher average of eiiiciency for the entire furnace, tending to eliminate all smoke. I I I l The instrumentalities employed by me in. attaining theaforesaid result, include a perforated tube surrounding the burner tube over an intervening annular space,the perforations admitting air between said tubes for issuance about the burner'nozzlm' also, a flaring cone slid'able upon said perforated tube, acting in conjunction with a surrounding constricted air supply tube, to deflect certain portions of the entering air, and to set up a swirling action in this air; whereby, as it mixes with the atomized fuel from the burner, a part of the burning mixture is caused to turn into the forward portion of the furnace, this-action not detracting from the penetration of the more rearward furnace portions of the bulk of the burning mixture.

In the drawing: Figure 1 is-a side secsp fi t t Patented DecQ30, 1913. Ap lication mammal 4;"1912. Serial K0. 729,186.

. tional elevation the front portion of a furnace, containing my improvement; Fig. 2 is a rear elevation of thesame; Fig. 3 is an enlarged detail side sectional view of the fuel and air entering devices.- Fig. 4 is a detail in section showing the front arranged I for natural draft.- F1g.,5is a perspective view of the air jacket for the burneryand;

6 is a section on line 6+6 of Fig. 5. I u said figures the letter 21 indicates the shell of an 011 burning furnace, of which the. frontportion is constructed accordingtomy. invention. Said frontport-ion istcomposed in part of theinner circular furnace or heatjio plate 6, an outer, circular plate, as c, -being separated from plate I) by an intervening space, which is divided into a number of cen- Itering passages dlby partitions d andshort, intermediate partitions (Z An air inlet,ase, is providednear the periphe of plate 0, and the air received thereat, 1n passinga-to the center, is heated in its passage by iu'l-l pingement againstth'e undulations or angu I ar surfaces of partitions-11f.- Said airrinlet e extends about the periphery of platec, and 'lS inclosed by an annular air box e toewhich; air a under pressure may be supplied, *as. through pipe e when it is desired to employ forced draft. When natural draft is brh gs ployed theannular wa-ll b of the furnace front is provided vwith slides, as :0, which may be moved in or out to regulate the air admission. 'An oilburner, as f, is supported cent-rally and axially'through plater c, asby' a spider or housing-g, which may be'bolted to said plate c,- the burner nozzle-projecting; toward the furnace interior, throughacentral opening formed in plateb. .Projetilig 1 inwardly from plate 7;, in concentric relation '95 with the-oil burner f, is an air outlet or Bu ply tube h, said outlet extending inwar y beyond the burner nozzle, and havingacon stricted or Venturidike neck portion It, to increase the velocity of air inflow at the point of initial'combustion. An approximately cone-faced valve, as i, is mounted concentrically about and adapted to slide longitudinally about the burner tube, to increase or decrease the size of the air passage allowed through outlet 72., and thereby regmlatc the quantity of preheated air for combustion supplied to the burner. The valve 2' may bQ-llOllOW, and have openings z" in its cone-face to permit air tocirculate about the burner tube. Said valve tube 6 therethrough. Extension rods, as 7', extending from the rear of valve 2', pass outwardly through holes provided therefor in spider g, and may thereby be manipulated to operate the valve.

Obviously, the supply tube h may beheld in position in.any suitable manner. -As here shown it has an annular flange h, by which it is bolted to a ring h, held against the outer surface of plate I), lying within a recess 12 therein, whereby it may be easily removed. The .spider 5/ has a .flange g through which itis' held in engagement with the plate a by pivotal catches as Connections, as the'legs h, connect spider g with ring h In this manner the spider g,

. carrying the burner, valveand supply tube may be easily adjusted and secured in place,-

"'01- fremoved. Surrounding. burner f is a largertube lc,'wliich-may be integral with ,spider g, as seen, or a separate member.

The clearance Z between tube 70 and burner f is intended as 'a space or passage for the travel offjair which isfinduced to enter said" space through orifices is provided for that purpose in tube l: to coolthe burner tube 1. Said orifices k are inclined forwardly and tangentially through 'the wall of tube is, whereby the air enters the aforesaid space orpassage in the form'of jets, and issues from said passage as a whirling mass. The valvei has itss'liding bearings upon this tube'k, which is really an air jacket, since itsupplies a layer of cooling air directly against said burner. f

Fitting slidably upon .tube'k, at itsfor-i ward end, is' an outwardly flaring cone-like deflector,as m,- having a collar or flange n, .by which .it is 's'lidingly supported. The; outer periphery of deflector'm, is normally inabout the central transverse plane-of air supply tube h, but the axial position of said deflector maybe varied, as by manipulating the rods .0 which extend therefrom and pass? outthrough the spider, for that, purpose.

In considering the action of the atomized fuel v and air. issuing from their respectivepflssagesinto the furnace, we find the following condition: The burner being of the type that imparts a swirling, spreading motion to the atomized fuel, causes the fuel to be thus projected from its nozzle, while within air supply tube 71. The regulated quantity of air, entering from the heating i i 1,os2,ss5

forward portion of the furnace, thus performing an important function 'of this invention.

it is heated, is still of a temperature con siderably below that of the interior of the furnace, and thusihas a cooling effect on the burner nozzle, which is partly exposed to the furnace heat.

Longitudinal adjustment of deflector m permits a variation in degree of its aforeall practical conditions of operation. I claim 1. Adurnace front, a burner tube entered from and surrounding said burner tube, and a mam air supply means surrounding said ceiving air from said main air supply for impingement upon the burner tube, and for issue about the burner nozzle;

an annular air passage, and a main air supply-means surrounding the cooling acket, said acket having perforat1ons to recelve nozzle.

therein, a perforated jacket surrounding said burner tube and providing an 'intermediate air passage, and an aizially adjustajole deflector surrounding the; burner nozz e.-

in, a perforated jacket for said burner providing an intermediate airpassage, an agially adjustable deflector surrounding'the burner nozzle,- and a constricted air supply tube surrounding said deflector. T

5. A furnace'front, a burner entered there viding'an intermediate air passage, an'axlally adjustable deflector surrounding the burner nozzle, a constricted air supply tube surrounding said deflector, and a. cone-like valve axially adjustable with respect to said air supply tube.

6. A furnace front, centering air heating passage therein, a peripheral inlet to said passages, an .annular air box inclosing said inlet and means for introducing air under pressure to said air box.

therein, and a jacket surrounding and being co-extensive with said burner tube and spaced therefrom to form an intermediate, annular air passage, to deliver a hollow column of air at the burner nozzle said jackethaving a series of tangential, forwardly disaid influence upon the passing air, to suit jacket, said perforated cooling jacket re- 4. A furnace front, a. burner entered there-l The air'jsupplied to the orifices while therein, a perforated cooling jacket spaced 2. A furnace front, a burner tube entered therein, a cooling jacket surrounding the burner tube spaced therefrom t'o'form air from" saidmain air supply for impin ep v inent upon said burner tube, toget or! with a cone-like, imperforate, outwardly-. I

flaring deflector surroundingi'the' burner 3-. A. furnace front,' a burnertube enteredloo in, a perforated jacket folsaidburner pro v 7. A furnace front, a burner entered I I ias rected perforations to cause air jets to impinge upon the burner tube and supply said air passage.

8. A furnace front, a-burner tube entered therein, and a jacket surrounding and being co-extensive with said burner tube and spaced therefrom to form an intermediate,

annular-air passage, saidjacket being closed at its rear end and having a series of tengential, forwardly directed perforations to cause air jets to impinge upon the surface of said burner hollow column zle.

Signed at the borough of Manhattan in 15 the city, county and State of New York this 30th day of October A. D. 1912.

WILLIAM ALBERT WHITE.

Witnesses:

SADIE R. SEMLEAR, JAMES DONOHUE.

tube, and deliver a swirling of air about the burner 'iioz- 

